1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
import unittest
from scrapy.contrib.downloadermiddleware.redirect import RedirectMiddleware
from scrapy.spider import BaseSpider
from scrapy.exceptions import IgnoreRequest
from scrapy.http import Request, Response, HtmlResponse, Headers
class RedirectMiddlewareTest(unittest.TestCase):
def setUp(self):
self.spider = BaseSpider('foo')
self.mw = RedirectMiddleware()
def test_priority_adjust(self):
req = Request('http://a.com')
rsp = Response('http://a.com', headers={'Location': 'http://a.com/redirected'}, status=301)
req2 = self.mw.process_response(req, rsp, self.spider)
assert req2.priority > req.priority
def test_redirect_301(self):
def _test(method):
url = 'http://www.example.com/301'
url2 = 'http://www.example.com/redirected'
req = Request(url, method=method)
rsp = Response(url, headers={'Location': url2}, status=301)
req2 = self.mw.process_response(req, rsp, self.spider)
assert isinstance(req2, Request)
self.assertEqual(req2.url, url2)
self.assertEqual(req2.method, method)
# response without Location header but with status code is 3XX should be ignored
del rsp.headers['Location']
assert self.mw.process_response(req, rsp, self.spider) is rsp
_test('GET')
_test('POST')
_test('HEAD')
def test_dont_redirect(self):
url = 'http://www.example.com/301'
url2 = 'http://www.example.com/redirected'
req = Request(url, meta={'dont_redirect': True})
rsp = Response(url, headers={'Location': url2}, status=301)
r = self.mw.process_response(req, rsp, self.spider)
assert isinstance(r, Response)
assert r is rsp
def test_redirect_302(self):
url = 'http://www.example.com/302'
url2 = 'http://www.example.com/redirected2'
req = Request(url, method='POST', body='test',
headers={'Content-Type': 'text/plain', 'Content-length': '4'})
rsp = Response(url, headers={'Location': url2}, status=302)
req2 = self.mw.process_response(req, rsp, self.spider)
assert isinstance(req2, Request)
self.assertEqual(req2.url, url2)
self.assertEqual(req2.method, 'GET')
assert 'Content-Type' not in req2.headers, \
"Content-Type header must not be present in redirected request"
assert 'Content-Length' not in req2.headers, \
"Content-Length header must not be present in redirected request"
assert not req2.body, \
"Redirected body must be empty, not '%s'" % req2.body
# response without Location header but with status code is 3XX should be ignored
del rsp.headers['Location']
assert self.mw.process_response(req, rsp, self.spider) is rsp
def test_redirect_302_head(self):
url = 'http://www.example.com/302'
url2 = 'http://www.example.com/redirected2'
req = Request(url, method='HEAD')
rsp = Response(url, headers={'Location': url2}, status=302)
req2 = self.mw.process_response(req, rsp, self.spider)
assert isinstance(req2, Request)
self.assertEqual(req2.url, url2)
self.assertEqual(req2.method, 'HEAD')
# response without Location header but with status code is 3XX should be ignored
del rsp.headers['Location']
assert self.mw.process_response(req, rsp, self.spider) is rsp
def test_meta_refresh(self):
body = """<html>
<head><meta http-equiv="refresh" content="5;url=http://example.org/newpage" /></head>
</html>"""
req = Request(url='http://example.org')
rsp = HtmlResponse(url='http://example.org', body=body)
req2 = self.mw.process_response(req, rsp, self.spider)
assert isinstance(req2, Request)
self.assertEqual(req2.url, 'http://example.org/newpage')
def test_meta_refresh_with_high_interval(self):
# meta-refresh with high intervals don't trigger redirects
body = """<html>
<head><meta http-equiv="refresh" content="1000;url=http://example.org/newpage" /></head>
</html>"""
req = Request(url='http://example.org')
rsp = HtmlResponse(url='http://example.org', body=body)
rsp2 = self.mw.process_response(req, rsp, self.spider)
assert rsp is rsp2
def test_meta_refresh_trough_posted_request(self):
body = """<html>
<head><meta http-equiv="refresh" content="5;url=http://example.org/newpage" /></head>
</html>"""
req = Request(url='http://example.org', method='POST', body='test',
headers={'Content-Type': 'text/plain', 'Content-length': '4'})
rsp = HtmlResponse(url='http://example.org', body=body)
req2 = self.mw.process_response(req, rsp, self.spider)
assert isinstance(req2, Request)
self.assertEqual(req2.url, 'http://example.org/newpage')
self.assertEqual(req2.method, 'GET')
assert 'Content-Type' not in req2.headers, \
"Content-Type header must not be present in redirected request"
assert 'Content-Length' not in req2.headers, \
"Content-Length header must not be present in redirected request"
assert not req2.body, \
"Redirected body must be empty, not '%s'" % req2.body
def test_max_redirect_times(self):
self.mw.max_redirect_times = 1
req = Request('http://scrapytest.org/302')
rsp = Response('http://scrapytest.org/302', headers={'Location': '/redirected'}, status=302)
req = self.mw.process_response(req, rsp, self.spider)
assert isinstance(req, Request)
assert 'redirect_times' in req.meta
self.assertEqual(req.meta['redirect_times'], 1)
self.assertRaises(IgnoreRequest, self.mw.process_response, req, rsp, self.spider)
def test_ttl(self):
self.mw.max_redirect_times = 100
req = Request('http://scrapytest.org/302', meta={'redirect_ttl': 1})
rsp = Response('http://www.scrapytest.org/302', headers={'Location': '/redirected'}, status=302)
req = self.mw.process_response(req, rsp, self.spider)
assert isinstance(req, Request)
self.assertRaises(IgnoreRequest, self.mw.process_response, req, rsp, self.spider)
def test_redirect_urls(self):
req1 = Request('http://scrapytest.org/first')
rsp1 = Response('http://scrapytest.org/first', headers={'Location': '/redirected'}, status=302)
req2 = self.mw.process_response(req1, rsp1, self.spider)
rsp2 = Response('http://scrapytest.org/redirected', headers={'Location': '/redirected2'}, status=302)
req3 = self.mw.process_response(req2, rsp2, self.spider)
self.assertEqual(req2.url, 'http://scrapytest.org/redirected')
self.assertEqual(req2.meta['redirect_urls'], ['http://scrapytest.org/first'])
self.assertEqual(req3.url, 'http://scrapytest.org/redirected2')
self.assertEqual(req3.meta['redirect_urls'], ['http://scrapytest.org/first', 'http://scrapytest.org/redirected'])
if __name__ == "__main__":
unittest.main()
|
